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The dodo is an extinct flightless bird that once lived on the island of Mauritius.
Biology - Environmental Change (AQA)
As a part of GCSE Science, students will look at interdependence and adaptation. This is the last of three quizzes on the subject and it looks in particular at the effect environmental change has on the organisms that live in a particular habitat. This covers the effect of human activities, such as farming and pollution, but also natural changes and simple changes which can be observed, such as changing the habitat of woodlice.
Changes in the environment affect the distribution of living organisms in a habitat. Such changes may be caused by living or non-living factors such as the arrival of a new competitor, or changes in the average temperature or rainfall. These changes have an effect on the organisms found in that habitat. Populations of the organisms that are better adapted to the environmental change will increase whilst poorly adapted ones will decrease. Organisms that are highly specialised can disappear entirely as a result of environmental changes.
1 .
Which of the following is an abiotic change in the environment?
Arrival of a new predator
pH
Humans cutting down trees
Arrival of an invasive plant species
Other abiotic changes are temperature and rainfall
2 .
The larva of the mayfly can only survive in very clean water. Because of this, how can we use the mayfly?
It can be used as food for fish farms
It can be used directly to measure the exact amounts of pollutants
It can be used as an indicator species for pollution
It can be used as a model fly in fly fishing
Even a small amount of pollution will kill off the mayfly larva
3 .
Humans have been cutting down trees for thousands of years. Which of the following is not an environmental change caused by deforestation?
Acid rain
Less food and shelter for wildlife
Changes in rainfall patterns
More carbon dioxide in the atmosphere
Acid rain is mainly caused by sulfur dioxide and nitrogen oxides in the air. These come from burning fossil fuels
4 .
Woodlice are nocturnal crustaceans who absorb water through their skin. They live in dark, damp places including under rocks. If you remove a rock under which woodlice are living what will happen to the woodlice?
They will find somewhere else to live
They will curl up into a little ball
They will do nothing
They will die
The reaction of woodlice to changes in their environment can be investigated by using apparatus called a choice chamber
5 .
How has the number of farmland birds in Europe been affected as farming has become more intensive?
The number of farmland birds has increased
The number of farmland birds has not changed
The number of farmland birds has decreased
The number of farmland birds is not affected by farming
There are many reasons for this such as ploughing when ground breeding birds are nesting, removing hedges and trees to make larger fields and increased use of pesticides which kills off the insects that the birds eat
6 .
Some pupils investigated the streams near their school. In one of the streams, the water looked very clear and the only creatures they found were rat tailed maggots and sludgeworms. What does that tell them?
The water is very polluted
The water is moderately polluted
The water is slightly polluted
The water is completely unpolluted
Appearances can be deceptive. Even though the water in the stream looked nice and clean, it wasn't. Rat tailed maggots and sludgeworms are indicator species of very polluted water
7 .
Where would you be most likely to find bushy lichens?
On trees close to a factory producing sulfuric acid
On trees by a busy main road in a town centre
On trees planted alongside a motorway
On trees in the countryside
Bushy lichens can only thrive in areas of very low pollution
8 .
What is the most common source of air pollution?
Volcanoes
Burning fossil fuels
Cutting down trees
Herds of cows
Air pollution will continue to increase as long as humans are dependent on fossil fuels for energy
9 .
The dodo is an extinct flightless bird that lived on the island of Mauritius. Which of the following could explain why it became extinct when humans settled on the island?
People caught and ate lots of dodos
People brought dogs with them and the dogs ate the dodo's eggs
People needed space to build homes and create farms which reduced the space available for dodos
All of the above
The dodo had no fear of humans and was very easy to catch and kill for food. It nested on the ground an laid only one egg so when dogs and other domestic animals found and ate the egg, fewer dodos were born. Building and farming destroyed the habitat of the dodo and it took less than 70 years for human activity to make the dodo extinct as it lived only on Mauritius
10 .
Which one of the following is an advantage of using a data logger and temperature probe instead of an ordinary thermometer?
It is more accurate
Readings can be taken automatically
It is cheaper and easier to use than a thermometer
It runs off electricity
You can take continuous readings over long periods of time without needing to be there. As for the other reasons above - there are very accurate conventional thermometers, data logging equipment usually costs more than the equivalent standard thermometer and you need to learn how to use the data logger. Being electrically powered is a disadvantage - you need to make sure it is fully charged so that your data is not lost
You can find more about this topic by visiting BBC Bitesize - Adaptations, interdependence and competition - AQA
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